Akihiko Ito

Biographic Data

ID6570188
NAMEAkihiko Ito
GIVEN NAMESAkihiko
FAMILY NAMEIto
SIGNATUREITO A
AFFILIATIONSNational Institute for Environmental Studies
ORCID0000-0001-5265-0791
VERIFIEDYes
TOTAL WORKS28
TOTAL CITATIONS8
AUTHOR COUNT28
EDITOR COUNT0
FIRST PUBLICATION YEAR2012
LATEST PUBLICATION YEAR2026
H-INDEX2

  • Emergent turnover time and temperature sensitivity of global soil carbon cycling

    Open AccessShoji Hashimoto, Akihiko Ito et al.ARTICLEEnvironmental Research Letters2026

    Soils hold vast amounts of organic carbon and play a pivotal role in the global carbon cycle. The turnover time ( τ ) and temperature sensitivity of the soil carbon cycle—commonly expressed as Q 10 —are critical parameters for projecting climate–carbon feedbacks under climate change. However, the temperature dependency of soil Q 10 remains controversial, with reported values varying widely across studies. Here, we synthesize global datasets of so…

  • Mining global soil carbon datasets: Can modern machine learning uncover the missing pieces of process-based models

    Open AccessShoji Hashimoto, Elisa Bruni et al.ARTICLEEnvironmental Research Letters2025

    The future of terrestrial soil carbon stocks plays a crucial role in climate change prediction. Modern machine learning techniques are now widely applied in soil science to predict the spatial distribution of soil properties from observational data. Beyond prediction, the use of machine learning as a data-mining tool offers a promising pathway for improving soil carbon modelling and refining projections of climate–carbon feedbacks. In this paper,…

  • The enduring world forest carbon sink

    Open AccessYude Pan, Richard A Birdsey et al.ARTICLENature2024

    The uptake of carbon dioxide (CO2) by terrestrial ecosystems is critical for moderating climate change1. To provide a ground-based long-term assessment of the contribution of forests to terrestrial CO2 uptake, we synthesized in situ forest data from boreal, temperate and tropical biomes spanning three decades. We found that the carbon sink in global forests was steady, at 3.6 ± 0.4 Pg C yr−1 in the 1990s and 2000s, and 3.5 ± 0.4 Pg C yr−1 in the …

  • Critical needs to close monitoring gaps in pan-tropical wetland CH 4 emissions

    Open AccessQing Zhu, Kunxiaojia Yuan et al.ARTICLEEnvironmental Research Letters2024

    Global wetlands are the largest and most uncertain natural source of atmospheric methane (CH 4 ). The FLUXNET-CH 4 synthesis initiative has established a global network of flux tower infrastructure, offering valuable data products and fostering a dedicated community for the measurement and analysis of methane flux data. Existing studies using the FLUXNET-CH 4 Community Product v1.0 have provided invaluable insights into the drivers of ecosystem-t…

  • Impact of climate and socioeconomic changes on fire carbon emissions in the future: Sustainable economic development might decrease future emissions

    Open AccessChae Yeon Park, Kiyoshi Takahashi et al.ARTICLEGlobal Environmental Change2023Cited by: 2References: 2

    Fires and their associated carbon and air pollutant emissions have a broad range of environmental and societal impacts, including negative effects on human health, damage to terrestrial ecosystems, and indirect effects that promote climate change. Previous studies investigated future carbon emissions from the perspective of response to climate change and population growth, but the compound effects of other factors like economic development and la…

  • Intergenerational inequities in exposure to climate extremes

    Open AccessWim Thiery, Stefan Lange et al.ARTICLEScience2021

    Young generations are severely threatened by climate change

  • Comparing machine learning-derived global estimates of soil respiration and its components with those from terrestrial ecosystem models

    Open AccessHaibo Lü, Shihua Li et al.ARTICLEEnvironmental Research Letters2021

    The CO 2 efflux from soil (soil respiration (SR)) is one of the largest fluxes in the global carbon (C) cycle and its response to climate change could strongly influence future atmospheric CO 2 concentrations. Still, a large divergence of global SR estimates and its autotrophic (AR) and heterotrophic (HR) components exists among process based terrestrial ecosystem models. Therefore, alternatively derived global benchmark values are warranted for …

  • A comprehensive quantification of global nitrous oxide sources and sinks

    Open AccessHanqin Tian, Rongting Xu et al.ARTICLENature2020

  • The Global Methane Budget 2000–2017

    Open AccessMarielle Saunois, Ann R Stavert et al.ARTICLEEarth System Science Data2020

    Understanding and quantifying the global methane (CH4) budget is important for assessing realistic pathways to mitigate climate change. Atmospheric emissions and concentrations of CH4 continue to increase, making CH4 the second most important human-influenced greenhouse gas in terms of climate forcing, after carbon dioxide (CO2). The relative importance of CH4 compared to CO2 depends on its shorter atmospheric lifetime, stronger warming potential…

  • Pronounced and unavoidable impacts of low-end global warming on northern high-latitude land ecosystems

    Open AccessAkihiko Ito, Christopher P O Reyer et al.ARTICLEEnvironmental Research Letters2020

    Arctic ecosystems are particularly vulnerable to climate change because of Arctic amplification. Here, we assessed the climatic impacts of low-end, 1.5 °C, and 2.0 °C global temperature increases above pre-industrial levels, on the warming of terrestrial ecosystems in northern high latitudes (NHL, above 60 °N including pan-Arctic tundra and boreal forests) under the framework of the Inter-Sectoral Impact Model Intercomparison Project phase 2b pro…

  • Soil carbon sequestration simulated in CMIP6-Lumip models: Implications for climatic mitigation

    Open AccessAkihiko Ito, Tomohiro Hajima et al.ARTICLEEnvironmental Research Letters2020

    Land-use change affects both the quality and quantity of soil organic carbon (SOC) and leads to changes in ecosystem functions such as productivity and environmental regulation. Future changes in SOC are, however, highly uncertain owing to its heterogeneity and complexity. In this study, we analyzed the outputs of simulations of SOC stock by Earth system models (ESMs), most of which are participants in the Land-Use Model Intercomparison Project. …

  • Interannual variability on methane emissions in monsoon Asia derived from Gosat and surface observations

    Open AccessFenjuan Wang, Shamil Maksyutov et al.ARTICLEEnvironmental Research Letters2020

    In Asia, much effort is put into reducing methane (CH 4 ) emissions due to the region’s contribution to the recent rapid global atmospheric CH 4 concentration growth. Accurate quantification of Asia’s CH 4 budgets is critical for conducting global stocktake and achieving the long-term temperature goal of the Paris Agreement. In this study, we present top-down estimates of CH 4 emissions from 2009 to 2018 deduced from atmospheric observations from…

  • Benchmark estimates for aboveground litterfall data derived from ecosystem models

    Open AccessShihua Li, Wenping Yuan et al.ARTICLEEnvironmental Research Letters2019

    Litter production is a fundamental ecosystem process, which plays an important role in regulating terrestrial carbon and nitrogen cycles. However, there are substantial differences in the litter production simulations among ecosystem models, and a global benchmarking evaluation to measure the performance of these models is still lacking. In this study, we generated a global dataset of aboveground litterfall production (i.e. cLitter), a benchmark …

  • Evapotranspiration simulations in Isimip2a—Evaluation of spatio-temporal characteristics with a comprehensive ensemble of independent datasets

    Open AccessRichard Wartenburger, Sonia I Seneviratne et al.ARTICLEEnvironmental Research Letters2018

    Actual land evapotranspiration (ET) is a key component of the global hydrological cycle and an essential variable determining the evolution of hydrological extreme events under different climate change scenarios. However, recently available ET products show persistent uncertainties that are impeding a precise attribution of human-induced climate change. Here, we aim at comparing a range of independent global monthly land ET estimates with histori…

  • Contribution of environmental forcings to US runoff changes for the period 1950–2010

    Open AccessWhitney L Forbes, Jiafu Mao et al.ARTICLEEnvironmental Research Letters2018

    Runoff in the United States is changing, and this study finds that the measured change is dependent on the geographic region and varies seasonally. Specifically, observed annual total runoff had an insignificant increasing trend in the US between 1950 and 2010, but this insignificance was due to regional heterogeneity with both significant and insignificant increases in the eastern, northern, and southern US, and a greater significant decrease in…

  • Evaluating changes of biomass in global vegetation models: The role of turnover fluctuations and Enso events

    Open AccessAnselmo García Cantú Ros, Katja Frieler et al.ARTICLEEnvironmental Research Letters2018

    la diffusion de documents scientifiques de niveau recherche, publis ou non, manant des tablissements d'enseignement et de recherche franais ou trangers, des laboratoires publics ou privs

  • Estimating water–food–ecosystem trade-offs for the global negative emission scenario (IPCC-RCP2.6)

    Open AccessYoshiki Yamagata, Naota Hanasaki et al.ARTICLESustainability Science2018Cited by: 6References: 8

  • Global wetland contribution to 2000–2012 atmospheric methane growth rate dynamics

    Open AccessBenjamin Poulter, Philippe Bousquet et al.ARTICLEEnvironmental Research Letters2017

    Increasing atmospheric methane (CH 4 ) concentrations have contributed to approximately 20% of anthropogenic climate change. Despite the importance of CH 4 as a greenhouse gas, its atmospheric growth rate and dynamics over the past two decades, which include a stabilization period (1999–2006), followed by renewed growth starting in 2007, remain poorly understood. We provide an updated estimate of CH 4 emissions from wetlands, the largest natural …

  • Reconciliation of top-down and bottom-up CO 2 fluxes in Siberian larch forest

    Open AccessKumiko Takata, Prabir K Patra et al.ARTICLEEnvironmental Research Letters2017

    Carbon dioxide (CO _2 ) fluxes by different methods vary largely at global, regional and local scales. The net CO _2 fluxes by three bottom-up methods (tower observation (TWR), biogeochemical models (GTM), and a data-driven model (SVR)), and an ensemble of atmospheric inversions (top-down method, INV) are compared in Yakutsk, Siberia for 2004–2013. The region is characterized by highly homogeneous larch forest on a flat terrain. The ecosystem aro…

  • Benchmarking carbon fluxes of the Isimip2a biome models

    Open AccessJinfeng Chang, Philippe Ciais et al.ARTICLEEnvironmental Research Letters2017

  • Photosynthetic productivity and its efficiencies in Isimip2a biome models: Benchmarking for impact assessment studies

    Open AccessAkihiko Ito, Kazuya Nishina et al.ARTICLEEnvironmental Research Letters2017

  • Missing pieces to modeling the Arctic-Boreal puzzle

    Open AccessJoshua B Fisher, Daniel J Hayes et al.ARTICLEEnvironmental Research Letters2017

    NASA has launched the decade-long Arctic-Boreal Vulnerability Experiment (ABoVE). While the initial phases focus on field and airborne data collection, early integration with modeling activities is important to benefit future modeling syntheses. We compiled feedback from ecosystem modeling teams on key data needs, which encompass carbon biogeochemistry, vegetation, permafrost, hydrology, and disturbance dynamics. A suite of variables was identifi…

  • Regional contribution to variability and trends of global gross primary productivity

    Open AccessMin Chen, Rashid Rafique et al.ARTICLEEnvironmental Research Letters2017

  • Global land carbon sink response to temperature and precipitation varies with Enso phase

    Open AccessYuanyuan Fang, A M Michalak et al.ARTICLEEnvironmental Research Letters2017

    Climate variability associated with the El Niño-Southern Oscillation (ENSO) and its consequent impacts on land carbon sink interannual variability have been used as a basis for investigating carbon cycle responses to climate variability more broadly, and to inform the sensitivity of the tropical carbon budget to climate change. Past studies have presented opposing views about whether temperature or precipitation is the primary factor driving the …

  • Regional carbon fluxes from land use and land cover change in Asia, 1980–2009

    Open AccessLeonardo Calle, Josep G Canadell et al.ARTICLEEnvironmental Research Letters2016

    We present a synthesis of the land-atmosphere carbon flux from land use and land cover change (LULCC) in Asia using multiple data sources and paying particular attention to deforestation and forest regrowth fluxes. The data sources are quasi-independent and include the U.N. Food and Agriculture Organization-Forest Resource Assessment (FAO-FRA 2015; country-level inventory estimates), the Emission Database for Global Atmospheric Research (EDGARv4.…